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• This work may be classified under three heads [or (sub)divided into three parts]:
• 1. Preparation of abstracts;
• 2. ...
• 3. ...
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Русско-английский научно-технический словарь
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• This work may be classified under three heads [or (sub)divided into three parts]:
• 1. Preparation of abstracts;
• 2. ...
• 3. ...